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An independent guide. Every fact linked to its source and dated.

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Met Office and Environment Agency, as of . Met Office warnings (South West England) · Environment Agency flood warnings. Not a safety service: check the official source before you travel.

Month by month

Cornwall in August 2027: daylight, weather, holidays and dog rules

Photograph to come Cornwall in August.

What to expect in Cornwall in August 2027: sunrise and sunset, long-term average weather, bank and school holidays, and which beach rules apply.

Daylight

Sunrise and sunset in Truro (UK local time), from our own calculation using NOAA solar equations. Expect them to be within a minute or two.

DateSunriseSunsetDaylight
1 August 202705:4821:0315h 15m
15 August 202706:0920:3914h 30m
31 August 202706:3320:0713h 34m

Average weather in August

Averages for August over 1991–2020 at the Met Office weather station at Camborne. We calculated them from Met Office historic station data. They are long-term averages, not a forecast.

Average daily high
19.0°C
Average nightly low
13.4°C
Average rainfall
79 mm
Average sunshine
180 hours
Average days of air frost
0.0

Bank and school holidays

Bank holidays from GOV.UK.

School dates for Cornwall’s Community and Voluntary-Controlled schools, from Cornwall Council. Academies and other schools may differ.

Beaches in August

Dogs: August is when the most rules apply. Dogs are banned between 10am and 6pm on 45 beaches, and must be on a lead from 10am to 6pm at Summerleaze, Bude. Early mornings and evenings are outside the restricted hours. Three places have an all-year, 24-hour ban: Carnsew Pool, Copperhouse Pool and Hayle Estuary. Privately owned beaches can set their own rules, and the council’s other dog orders (such as picking up after your dog) apply all year.

Beaches with a 10am–6pm dog ban all through August:

These are the restrictions in Cornwall Council’s current orders (council page last updated 23 October 2026). Councils review orders, so check the full list and the council page before you travel.

Water quality: the Environment Agency’s bathing season ran from 15 May to 30 September in 2026; check the EA site to confirm the 2027 dates. During the season the EA samples each bathing water regularly and publishes pollution risk forecasts for some beaches. Check the Environment Agency bathing water site on the day.

Lifeguards: Cornwall Council says the RNLI’s main lifeguard season runs from May to September and varies by beach. Check the RNLI lifeguarded beach finder before you swim.

Tides: check BBC tide tables, as the council advises, and allow time to get off the beach before dark.

Browse all 87 beaches in our guide.

What’s on in August

Events, markets and live music across Cornwall are listed on our sister site: Share Cornwall’s events calendar.

Sources and checks

Last checked: . Published by Oaknest Media. How we check: editorial policy.